Here is one that is a bit unusual. It is a "fantasy" scheme I am sure, posing as a PRR boxcar celebrating the famous York train show in Pennsylvania but it was beautifully executed. It is Kline from the period when Kline took over the Marx cars and reproduced them in new schemes. It mounts the Marx 3/16" scale trucks with (metal) fork type automatic couplers . Its worth looking at more closely to remember what a great job Kline was doing at the time.
I would draw your attention to the wonderful detail that Kline was able to achieve with the Marx dies . Look at the rivet detail, not just on the car sides but on both sides of the roof stiffening supports. The rivets are each separated and visible with no overlaps or missed placements. Kline's lettering is sharp and crisp with no blurring of the lines. A really top notch job.
Again here on the logo end, you see the lettering is sharp and crisp and the cast detail is deep and very well executed. I would also note that Kline did a much better job of handling the ends of the door runners than did Marx on the originals who simply had a piece of plastic melted into a "head" to secure the runner end, here the head is covered and neatly obscured. Great job!
Well since I have very little reference material on Kline production I cannot state when this was made however they (Kline) certainly did a great job on it.
Best Wishes
Don